<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div class="video-item">
        <img class="img-base" src="http://pic5.bbzhi.com/dongwubizhi/keaichongwu/keaichongwu_426948_3.jpg">
    </div>
    <style>
        .video-item,
        .img-base {
            width: 450px;
            height: 350px
        }

        .video-item {
            overflow: hidden;
        }

        .img-base {
            z-index: 1;
            transition: all 0.6s;
        }

        .video-item:hover .img-base {
            cursor: pointer;
            transform: scale(1.2, 1.2);
        }
    </style>
</body>

</html>